Added new shaders

shaders/lift-gamma-gain/shader.json

@@ -0,0 +1,42 @@
+{
+  "id": "lift-gamma-gain",
+  "name": "Lift Gamma Gain",
+  "description": "Basic color grading controls for shadows, midtones, highlights, and overall RGB offset.",
+  "category": "Color",
+  "entryPoint": "shadeVideo",
+  "parameters": [
+    {
+      "id": "lift",
+      "label": "Lift",
+      "type": "color",
+      "default": [0.5, 0.5, 0.5, 1.0]
+    },
+    {
+      "id": "gamma",
+      "label": "Gamma",
+      "type": "color",
+      "default": [0.5, 0.5, 0.5, 1.0]
+    },
+    {
+      "id": "gain",
+      "label": "Gain",
+      "type": "color",
+      "default": [0.5, 0.5, 0.5, 1.0]
+    },
+    {
+      "id": "offset",
+      "label": "Offset",
+      "type": "color",
+      "default": [0.5, 0.5, 0.5, 1.0]
+    },
+    {
+      "id": "strength",
+      "label": "Strength",
+      "type": "float",
+      "default": 1.0,
+      "min": 0.0,
+      "max": 1.0,
+      "step": 0.01
+    }
+  ]
+}